NC0007064_2019 Discharge Channel Trituim Summary_20200615

ste‘aN DUKE Brunswick Nuclear Plant
P.O.Box 10429
ENERGY® Southport,NC 28461
JUN 0 8 2020
Serial: RA-20-0182
Mr. Tom Belnick
Supervisor, Complex Permitting Unit RECEIVED
Division of Water Resources
NC Department of Environmental Quality JUN 1 5 2020
1617 Mail Service Center
Raleigh, NC 27699-1617 NCDEQ/DWR/NPDES
Subject: Brunswick Steam Electric Plant, Unit Nos. 1 and 2
2019 Discharge Channel Tritium Summary
Dear Mr. Belnick:
This letter fulfills the Brunswick Steam Electric Plant's (BSEP) agreement to provide your office
with summary information regarding concentrations of tritium in discharges from the plant.
Duke Energy Progress, LLC, is providing your office with a summary page containing analytical
data regarding tritium concentrations in conjunction with the development and submittal to the
U.S. Nuclear Regulatory Commission (NRC) of the BSEP Annual Radiological Environmental
Operating Report. This information is being provided with the understanding that it is generated
pursuant to the requirements of the nuclear operating licenses issued by the NRC to the plant
and is not a requirement of the NPDES program.
If there are any questions please contact Mr. Don Safrit, at [phone] or Mr. Marty
McGowan, at [phone].
Sincerely,
Karl Moser
Plant Manager
Brunswick Steam Electric Plant
Enclosure: 2019 BSEP Effluent Tritium Sampling and Data

2019 BSEP Effluent Tritium Sampling and Data
Monthly samples are collected upstream of the ocean discharge pumps which pump water from the
effluent channel into the Atlantic Ocean. The samples are collected over a month time period using a
composite sampler with, typically, 50 milliliter aliquots being collected every 4 hours. Zero (0) of the
twelve samples from the effluent channel indicated the presence of tritium. The maximum tritium
concentration was <LLD pCi/L, which was expected due to plant operations water movement plans at
the time of sampling.
2019 BSEP Effluent Tritium Data
Sample Date Tritium Concentration (pCi/L)
1/18/2019 <LLD
2/16/2019 <LLD
3/16/2019 <LLD
4/16/2019 <LLD
5/19/2019 <LLD
6/14/2019 <LLD
7/16/2019 <LLD
8/17/2019 <LLD
9/14/2019 <LLD
10/17/2019 <LLD
11/14/2019 <LLD
12/15/2019 <LLD
LLD - Lower Limit of Detection
2019 BSEP Discharge Channel Tritium
— Discharge Channel —111F.■Water Quality Criterion
21000 —
20000 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
19000
18000
17000
16000
15000
14000
13000
ai 12000
5,11000
10000
a 9000
8000
7000
6000
5000
4000
3000
2000
1000 --
0 ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦
1/1 2/1 3/1 4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1
Date